package com.heima.search.service.impl;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.search.dtos.HistorySearchDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.search.pojos.ApUserSearch;
import com.heima.search.service.ApUserSearchService;
import com.heima.utils.thread.AppThreadLocalUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.List;

@Service
@Slf4j
public class ApUserSearchServiceImpl implements ApUserSearchService {
    @Autowired
    private MongoTemplate mongoTemplate;
    /**
     * 保存用户搜索历史记录
     * @param keyword
     * @param userI
     */
    @Override
    @Async
    public void insert(String keyword, Integer userId) {
        //1.查询当前用户的搜索关键词
        Query query = Query.query(Criteria.where("userId").is(userId).and("keyword").is(keyword));//我他么把keyword写成“keyword”,这当然会匹配不上啊，就会重复创建记录
        ApUserSearch apUserSearch = mongoTemplate.findOne(query, ApUserSearch.class);

        //2存在 更新创建时间
        if(apUserSearch!=null){
            apUserSearch.setCreatedTime(new Date());
            mongoTemplate.save(apUserSearch);
            return ;
        }


        /**
         * 为什么这里不用登录检查，原因有以下两点
         * 1 这是个异步调用方法，当调用这个方法时，是创建了一个新的线程来执行这个方法，所以我们无法从新创建的线程中获取到登录信息
         * 2 这个方法在调用前就检查过了登录信息
         */

        //3不存在 判断当前历史记录总数是否超过10
        apUserSearch =new ApUserSearch();
        apUserSearch.setUserId(userId);
        apUserSearch.setKeyword(keyword);
        apUserSearch.setCreatedTime(new Date());

        Query query1 = Query.query(Criteria.where("userId").is(userId));
        query1.with(Sort.by(Sort.Direction.DESC,"createdTime"));
        List<ApUserSearch> apUserSearchList = mongoTemplate.find(query1, ApUserSearch.class);
        if(apUserSearchList==null||apUserSearchList.size() < 10){
            mongoTemplate.save(apUserSearch);
        }
        else {
            ApUserSearch lastUserSearch = apUserSearchList.get(apUserSearchList.size() - 1);
            mongoTemplate.findAndReplace(Query.query(Criteria.where("id").is(lastUserSearch.getId())),apUserSearch);
        }


    }

    /**
     * 查询搜索历史
     * @return
     */

    @Override
    public ResponseResult findUserSearch() {
        //获取当前用户
        ApUser user = AppThreadLocalUtil.getUser();
        if(user==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }
        //根据用户查询数据，按照时间倒叙
        List<ApUserSearch> apUserSearches = mongoTemplate.find(Query.query(Criteria.where("userId").is(user.getId())).with(Sort.by(Sort.Direction.DESC, "createdTime")), ApUserSearch.class);
        return ResponseResult.okResult(apUserSearches);

    }
    /**
     *删除历史记录
     */
    @Override
    public ResponseResult delUserSearch(HistorySearchDto dto) {
        //1检查参数
        if(dto.getId()==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //2判断是否登录
        ApUser user = AppThreadLocalUtil.getUser();
        if(user==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }

        //3删除
        mongoTemplate.remove(Query.query(Criteria.where("userId").is(user.getId()).and("id").is(dto.getId())), ApUserSearch.class);

        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);

    }
}
